Theorem syld3an3 1244

Description: A syllogism inference. (Contributed by NM, 20-May-2007.)

Hypotheses

Ref	Expression
syld3an3.1	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
syld3an3.2	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜃) → 𝜏)

Assertion

Ref	Expression
syld3an3	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜏)

Proof of Theorem syld3an3

Step	Hyp	Ref	Expression
1		simp1 964	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜑)
2		simp2 965	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜓)
3		syld3an3.1	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
4		syld3an3.2	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜃) → 𝜏)
5	1, 2, 3, 4	syl3anc 1199	1 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜏)

Syntax hints:   → wi 4   ∧ w3a 945

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107

This theorem depends on definitions:  df-bi 116  df-3an 947

This theorem is referenced by:  syld3an1  1245  syld3an2  1246  brelrng  4730  moriotass  5712  nnncan1  7921  lediv1  8537  modqval  9990  modqvalr  9991  modqcl  9992  flqpmodeq  9993  modq0  9995  modqge0  9998  modqlt  9999  modqdiffl  10001  modqdifz  10002  modqvalp1  10009  exp3val  10188  bcval4  10391  dvdsmultr1  11379  dvdssub2  11383  divalglemeuneg  11468  ndvdsadd  11476  basgen2  12093  opnneiss  12170  cnpf2  12218